His freestyle is shit; he has no vocabulary whatsoever.
There's a big difference when listen to someone like Wayne and someone like Common, Mos Def, Immortal Technique, Talib Kweli, etc...one(Wayne) sounds like an obnoxious teenager wannabe thug who dropped out of middle school and talks about money, cars, and hoes all the time. The other (real rappers) have a level of intelligence in their lyrics, lyrics that make you think and that actually talk about real life, problems, etc. They also have an intelligent delivery/flow instead of trying to sound like a badass all of the time, acting like what they (Wayne) just said was the shit...when it's nothing more than them same ol' thing everyone (shitty rappers) are saying..