Cena didn't squash Tensai, if you see the match over Tensai kicked his ass.
The double handed chokeslam isn't his officially finisher anymore
People kick out of finishers, people kick out of finishers when they aren't pinned right away, and people kick out of finishers when during the match they haven't been hit by the "opponent" once
Tensai was pushed as a destructive force, but if you look back at his match against Cnea the first time around, you'll notice that he didn't win cleanly, it took Otunga, Johnny around ringside, Sakamoto, and mist to beat Cena.
I just think people are being way to negative over what essentially was a "hey we gave you wrestling earlier, now you get the annoying announcer getting beat up after he embarrassed the likes of JR". it wasn't a great match, it wasn't all that entertaining, but I'm not angry about it either I've seen time wasted with "who Weighs less" competitions.
Edit:
Too push home the chance that Cena would lose to Cole like he did johnny to at least give a hint of "omg Cole gonna win" to it.