unlike some of the others, i think the rock WAS great in the ring, very athletic, but yes, this was just an example of reading 3 or 4 words, and making a big cluster-fuck about it.
trying to switch from one profession where you are known worldwide to another, you are always going to be remembered as what you were when you went big. when someone says Clint Eastwood, what do you think? Western movies right? because that was his claim to fame. For Dwayne "dont call me the Rock" Johnson, it was wrestling. and for Miz, it was reality TV. i'll admit when i first saw him in WWE, i had a flashback to David Arquette in WCW... ugh. But he has really come a long way since then, and unlike the Rock, a lot of people have forgotten what Miz did before, and only see him as the Wrestler. so yes, he was within every right to say what he said.
Do i think as a wrestler Miz is even close to what Rock was? no. but thats not due to lack of trying, he does great with what he can do, but you throw Miz back in the Attitude Era, and i think he probably would have been able to cut Promo's with the likes of Stone Cold, Rock, and Y2J. and match quality? who cares! some of the best actual matches were from Angle and Lesnar, Angle and Benoit, but do people say that for the most part? no. they say it was ones with Austin, HBK, ect.. they were great yes, but for technical ability, none of them had it like the guys with the actual wrestling background. but thats not what WWE is about really, everyone knows that, it's ENTERTAINMENT. i would much rather watch someone get thrown off a Hell in the Cell then watch Angle and Benoit go at it.