In the games I've watched, Splitter does not play above the rim at all, he lacks the size and shotblocking to be a significant interior roadblock on defense and most of his offensive game is stunted by the same thing. The positive thing about him is that he is fairly nimble and mobile out on the perimeter but then again so is Tyrus Thomas, and with Thomas you get a guy who can really protect the rim.
Splitter's game is nowwhere even close to Gasol's .. as an interior defender, shotblocker, or post player. In fact Splitter does not possess any post moves, he makes his living in the pick and roll and beating small defenders with weak layups. That would get swatted into the 4th row in the nba on most nights.
All of which is not going to translate to the NBA level.
Biedrins would own the out of this guy as a comparable "white stiff" type player, and Biedrins isn't even that great.