They basically the same vehicle in terms of how they laid out in the chassis but the punisher/kagama built to be more budget friendly more plastic in them, shocks, shock towers, top deck, tower 2 tower brace, sintered gears etc but this also makes them lighter. The sketer has better motor mount, spring steel outdrives, aluminium centre diff, hardened steel gears metal
Shock towers & shocks better components but also make it bit heavier, pick your poison which you prefer. If your uk I saw the sketer & it better price than kag/punisher4 id go sketer but prob get punisher body for it. But corally world good place to look at them both compare the 2 see the different parts in them.
https://world.corally.com/sketer-2022/