i think its because united fans appreciated him much more than real fans. and the players were supportive of him. i mean rooney even took a back seat to give ronaldo the freedom to play how he likes. you just dont get that at madrid.

but i think if he wins the champions league with madrid, maybe he will be more appreciated in spain.

of course he will say that , first he played with man utd for many years , second he took many trophies with this club plus ballon and third he's got a lot of memories their.
I think with time he will love real madrid and specially if they won tropihies.
and there is something else at man utd he was like the boss of the players and the leader but at real madrid there is cassilas and ramos and players who have been a long time at madrid.