You got a link for that anywhere?
Ulloa 23 goals in 50 games (2.2 games a goal)
Wood at Birmingham 11 goals in 29 games (2.6 games a goal)
Wood at Leicester 19 goals in 53 games (2.8 goals a game)
That's just 4 goals less in 3 more games than Ulloa who, by all accounts, had a superb time at the Albion. Wood played 26 games last season for champions Leicester. It seems that the Leicester manager thinks that he's doing okay. The cold hard stats back this up too.
Wood had a purple match at Millwall, but I'm not convinced by his stats at Leicester - he was afterall playing for the best side in the league. That said, I wouldn't mind him here, although I'd definitely prefer taking a risk on a rough diamond from elsewhere in Europe because I just don't see Wood's scoring record ever matching Ulloa's.