Tippett has a gnarly shot and release, great speed, and little else. He has no vision or patience, so when he has the puck in the zone he's either going to bury it in the goalie's logo or make an awkward pass, either way he kills most cycles he's involved in. It's why he's not a great PP contributor. He's also the last guy on the team you want with the puck on his stick on your side of the red line, he's a turnover machine anytime he tries to make an outlet pass.
Tippett succeeds in the Flyers' "shell and counter" style because he's money if you hit him flying up ice with a stretch pass, but he's really frustrating otherwise. You can watch his game for a while and sort of see why Florida wasn't feeling him--even if he can produce in some settings, the lack of versatility limits his usage for a team that plays modern NHL hockey.
Foerster, on the other hand, is really smart. Makes simple, subtle plays to cut off defenders' options and keep them hemmed in, knows how to put the puck to good areas, all that. You're almost looking for a Crosby linemate dynamic...Chris Kunitz didn't have an elite shot, but he didn't need one, because he learned to pay attention and do the right little things so the megamind had time to figure out the rest.