Well its good to know, I've been put off rolling a Sentinel/Marauder alt because I've not seen one played well enough that couldn't have been bettered by a Jugg, that and as I said, they tend to just run about and not really focus.
I do like the bleed masters though, it's like they don't know I can remove 2 at a time every 5 seconds. More to the point, why do I never see them go for that Sorc healer who cant remove bleeds?