Right
Try to hit a sliding winner on clay on the run and tell me how easy that is.
Clay tennis is like a chess game. You have to outmanouver your opponent, not blast him off the court. Not being strong on both sides hurts you on clay whereas you can get away with having a bad BH for example on other surfaces because you can blast off before the opponent has a chance no pick up on that weakness. On clay you need to be consistent, patient and to know WHEN to strike, not just bashing the ball all the time.
What does great ball striker mean to you? Hitting hard? Ever heard of variety of strokes?
You exaggerate the slowness of grass and HC today. Nadal, who is obviously not manly in the way he plays, has won just a few HC and grass titles after years and years of turmoil. He gradually added some elements to his game to suit those surfaces as well.
Some of the greatest players in the game were claycourters at heart, even though they won on other surfaces as well. No one call look at a guy like Muster and tell me he did not play a "manly" game(whatever that means).
In fact one should wonder why the other manly guys don't have more achievements that he puss of the ATP, Nadal, since they obviously take their fate in their own hands, right? I mean these guys play a big serving, big hitting manly game, have surfaces that favour their game(only clay hampers it somewhat) on most of the ATP tour(grass+HC is 70% of the tour) and yet they still don't win as much on their fav surface as the slowcourt puss Nadal. Guys like Cilic,Soderling,Gulbis,Blake(when he young and healthy),Youzhny,Berdych can hit through any court yet their manly game hasn't added to much. Even if we scratch off Nadal's CC credentials he still has had better HC and grass results than those guys up there. As far as HC is concerned only Fed,Roddick and Djoker have the upper hand in HC credentials over Nadal.