So, after four games with harlequins now, my solitare has been the most lackluster model in my army. He usually accomplishes a small number of wounds. He's durable, due to his save, but his offensive power compared to one of my troupes is disappointing. I'm sure there will be a game in which he murders everything though, but not yet.
I've also played mostly against space marines, so catching falling back units in combat is not as exciting.