No, look at the numbers again... He talks like a much older (not younger) kid. His spoken vocabulary is probably well over 2000 words (not assessed that I know of). Average English-language sentence length 11 words. He's ONLY difficult to understand when he's trying to say what he WANTS to say, which is way the frick more complicated than what most 2 yr olds want to say.
A reasonably typical sentance (from earlier tonight) "Mama usually reads books to me, so [hisname] not want daddy to read this now" note that most of the grammer is accurate, and not/doesn't is a direct result of not being able to articulate the word "doesn't" accurately because of the blend, also use of time/relationship *concepts* that are not usually understood at 2. (it was "Ooosooolly," "dis," etc. as one would expect for a 2yr old)
-Mich
