Ok, so, you expect that just for one storyline WWE raise their ratings for what, permanently? On the course Vince was on that storylines, ratings remain up. When they ended, ratings go down, but it was shown that Vince's presence raised the ratings.
Not me or anyone can say how this is going to benefit a wrestler, but you cannot jump in and say it will not. The angle has not even been developed. Last year, from the Mcmahon death storyline, did it look like someone was going to get a rub rather than the Mcmahons? But what do reports say? That Mr. Kennedy was going to get pushed from this angle. Last storylines pushed Bobby Lashley and Finlay. So wrestlers do get benefited from The Mcmahon angles.
And how can you compare what happened on one skit on one show, one show with Carlito, to a permanent character like Sharkboy, or a PPV angle like Eric Young bringing Elvis, or AJ dressing in costumes on consecutive festivities. So yeah, you WWE pull shit like that with Carlito, one skit, on one show, TNA has characters based on comedy, and before you mention Hornswoggle, lately his comedy have been limited to Finlay planting someone with the shillellagh.
Say what you want, but Vince does cause a change on ratings, not permanently, but you can't expect a permanent raise of ratings just for one angle. And either you for some reason deny it, every Mcmahon angle push another wrestler along with Vince.