You are forgetting that Triple H doesnt have the final say on every decision. It is still Vince company(for now), so occasionally Triple H doesnt get his own way.
Look at the Armegeddon match, Hardy went over, but the match was all about Triple H. The commentators wouldn't shut up about him and even when Hardy won in his biggest match to date, the cameras went straight to Triple H for his reaction.
Triple H can be an entertaining wrestler at times, but as soon as anyone tries to get on the same popularity level as him, Triple H shoots them down.
Yes, he had Batista and Randy Orton and he has to get some praise for that. But for those two wrestlers, how many has he held down?
and how many could he not get a decent macth out of. goldberg, stiner, booker t, rvd, orton during his face run. the facts are the cream rises to the top. there us no glass cielling in the wwe there is only how far your talent health and ability to get over will take you.
Jeff Hardy is not champ because you never know when hes going back on drugs
Benjamin is not in the main event because he has not drawn and even when put into fueds with great wrestlers can only be athletic and being athletic and being entertaining are two very different things
Kennedy is not in the main event because he screws up.
Matt Hardy is not champ because his promos are subpar
Burke is not main event because he has not earned it by being a proven macth of the night every night guy
Morrison is not a main eventer because he screwed himself and got suspended last summer.
Cena is a main eventer because his personality and look brings in money
HHH is a main eventer because he draws
Undertaker because he draws
HBK, Orton, Batista are because love em or hate em they get reactions.
Big Show and Kane are not because they are not pushed as unstoppable monsters but are close
Y2j is over with smarks and somewhat with the mainstream
Edge is because he gets real heat
the cream rises to the top so if your favorite wrestlers is not in the main event of WrestleMania blame them for not doing enough to get themselves there.