unless a PW build is Mainly PW with little or No Multiclassing .... the Bonus Feats are irrelavant ... notice:
PW 20 vs Psion 20
PW 20BAB +15
d8 HD
8 Bonus Feats
20 powers Known(6th lvl and Below)
127 PP
Psion 20BAB +10
d4 HD
5 Bonus Feats
24 powers Known(6th lvl and Below)
3 @7th lvl Powers Known
3 @8th lvl Powers Known
6 @9th lvl Powers Known
343 PP
so a PW has More Hp(average 40 total) and BAB(+5 more) and 3 more bonus feats as opposed to 7th- 9th lvl Powers, 216 PP
but most Gish Builds wont be like that for either one ...... more like this:
Psion 10/ Slayer 10 vs
Psychic Warrior 10/ Slayer 10Psychic Warrior 10/ Slayer 10BAB +17
d8 HD
4 Bonus Feats
19 powers Known(6th lvl and Below)
115 PP
Psion 10/ Slayer 10BAB +15
d4 HD +d8 HD
3 Bonus Feats
24 powers Known(6th lvl and Below)
3 @7th lvl Powers Known
3 @8th lvl Powers Known
4 @9th lvl Powers Known
311 PP
now the comparison is even less favorable for the PW.... since they are far closer from a Martial point of view:
so a PW has More Hp(average
20 total) and BAB(
+2 more) and
1 more bonus feats as opposed to 7th- 9th lvl Powers, 196 PP
PWs cant really keep up with a Psion for Gish uses