No, as the monk whispergnome build illustrated, it does similar damage with unarmed strikes (all the time) to the iajutsu focus (not available all the times, in particular when you consider that marbles need to be deployed first from a flying mount. Note also that I due to an editing Error the monk' damage appeared to be not that of a large monk. I corrected that).
It does 1d8-2 damage per hit, with a lower to hit bonus. This is not at all similar to 1+4d6, which is what the Expert is hitting with. 2.5<15. You might get two attacks due to flurry, but then you're at an even lower bonus to hit... and since you're not flat footing opponents as much, you don't get the lower to hit requirements. If you use the alternate strike ability, you need to use full round actions for that, which removes the mobility advantage of the mount, once again proving that Monks are not a mobile attack class (as they're supposed to be).
Note also the lack of effective ranged abilities on your Monk. The Expert fights quite effectively at 360' out, with some penalties beyond that point... useful for a flying mounted warrior. The Monk is limited to Shuriken range at best. So no, your offensive abilities are not comparable.
Right now it is sufficient to say that I see no reason why his expert whispergnome should be perceived as anything but clearly inferior to my monk whispergnome.
The Expert can fight. The Monk is worthless at fighting. The Monk's advantages are evasion and increased ref/will saves, the Expert's advantage is he does enough damage to matter. The Expert also has more skills. It's not even close.
Also I think I have shown clearly that all of the monk's class abilities or ACFs at level 6 are still there, still contributing to the "monkness" of the class: decisive strike and high unarmed damage, invisibility, speed enhancement, monk combat style feats without requirements, ki strike, energy resistance, high saves. And these are supposed to be negligble or crappy?
You don't get invisibility from being a Monk (I think...), Decisive strike removes your mobility, your unarmed damage as a small level 6 Monk with INA is 1d8-2, and your speed bonus is worthless compared to the speed of the mount (where it doesn't help), plus you burned any advantage you'd have from combat style feats by spending many feats to gain skills and one feat to make up for not getting feycraft. You got +1 to AC for an AC bonus instead of just wearing light armor that would give at least +4. All you got was the increase (+4 or so) to two saves. You have proved that Monks are weak by needing to optimize everything but being a Monk.
Guys, what more evidence do you need?
How about a Monk that's actually competent using Monk abilities? The Expert was a skillmonkey scout who can fight, and he still fights better than your Monk.
JaronK has also asked for another build of mine with INT 18 and 22-pt-buy.
Well, no big deal.
Using a similar trick to JaronK's "CON dumping with changing into an undead":
7th level monk (note that this monk did not lose a level like the necropolitan whispergnome expert, although in this case it hardly matters), starts as human (possibly the monastery's librarian or scribe)
Experience is a river. You regain the lost level quickly.
STR 8, DEX 8, CON 8, INT 18, WIS 14, CHR 8.
Feats: otherwordly (human), skill prodigy, knowledge devotion, INA
Monk feats: stunning fist, combat reflexes, improved Trip.
Key event: gets polymorph any object (up to Level 20 for 1,600 gp) into an astral deva.
Skills: a lot, enough to emulate JaronK's
Items: maybe some stun, trip, and STR boosters.
Again (though this time with a completely different build), this monk is better than JaronK's expert.
Sure, an expert can also use PoA...but again, all the monk's class abilities are there, synergising well with the astral deva form.
...you went with buying a permanent Polymorph Any Object? SERIOUSLY? Did you see me spending my wealth on a Candle of Invocation? No? How about having a Wizard Haunt Shift my Expert into a Hardened Adamantium Skeleton so as to have Hardness 30? Nope, didn't do that either. Then don't be insane. Try again without raging TO abuse. Your entire power comes from having a Wizard buff you, not from being a Monk. Look again at the Expert I made. Note how what I used were the Expert's abilities (namely, having skills). Not having a nearby Wizard. Not optimizing my other stuff. I complimented the Expert's abilities with his feats and items... I didn't just outright overwhelm them. ANY class would be strong at level 7 if Polymorphed into a strong form, so you've just class X fallacy'd again. I swear, it should be just named the Giacomo fallacy.
JaronK