I don't think the argument of shoppa and t17 both require above average use of weapons is compelling enough because in shoppa you can only do so much with a weapon from a rope where in t17 everything is so much more dynamic. In shoppa, the terrain is the same the entire game, so your anticipation of your opponent's weapons and how they use them and how you react to that is quite limited. not to mention in shoppa, you will most times attack with the weapon you get during the active turn, or else you will fall behind and have a bigger chance of losing. In t17, the terrain is always changing, you can hold on to weapons and wait to use them at the optimal time, and not only do you have to be creative with your weapons, you have to very much anticipate what weapons your opponent may have and position yourself accordingly. Team17 is so much more weapon orientated than shoppa (like i said, in shoppa, once you get the weapon you pretty much use it the same turn), that it is hard to group the two because shoppa has weapon usage skills to a degree, but not as much as t17. I guess the point I am trying to make is the main theme of t17 is weapon usage and the main theme of shoppa is consistency. In shoppa, being more consistent trumps being more creative IMO, but of course, if you can do both, that is really great. In t17, using weapons more creatively trumps attacking whenever possible, meaning having a lead in t17 is less important than it is in shoppa. That's why i believe wxw and shoppa are more similar, because their key theme is consistency.
While t17 and shoppa both require weapon creativity, that element only goes so high in shoppa while that element is like a skyscraper in t17.