Even by Andy Gray's shit standards that's a piss-poor assessment.
He's Scottish anyway therefore knows f*ck all about good football.
It is a physical and tough league compared to La Liga though and Messi being the size he is he will probably get knocked all over the place.
Similarly diminutive players like Juninho and Zola seemed to manage ok in the Premiership.
Lets face it, there are only really 3 or 4 teams which would make a dent in the Prem. (Barca, Real Madrid, Atletic Bilbao and Atlectio Madrid.. In my opinion)