What? He has a strong first serve, can inject pace out of nowhere really well, good variety especially with the slice, has an interesting and effective backhand and is a rather good mover especially on clay.
His serve isn't so effective on clay.
And the other things you mentioned, I don't see them (on clay). To be honest I didn't watch him that match on clay lately (because he didn't play that much), but in Davis Cup against Argentina he was awful.
He can be a threat con fast surfaces (in fact he defeated Nadal last year in Shangai).