OK ga.. Even sensored hobbywing, still good price, and the program card is plugged to the fan plug, don't need to open the receiver box, very convenience... Too bad, without 7-8v high volt bec.
Tenshock is a bigger (longer) motor .. Hobbywing is 3655 side (36mm diameter by 55mm/56mm) Tenshock is 3665 size (65/66mm long can) which is ~ 20-30% more power/torque, but also heavier, just like Tekin Pro 4 and Pro 4 HD
For heavier SCT, such as Losi, Tenshock will have advantage ... however, it all depends on your gearing, Tenshock 411 is battery hungers .... you need much more powerful battery, and will cause shorter run time .. I love my Tenshock 5200kv .. but damn .. so short running time ..
Yes, that is what, a 3656 4 pole (or 3655) is good enough .... Sometimes you may prefer a long can 550 such as Novak 3674, in order to balance the car better.