Ermac isnt that bad, his long grab range becomes a threat when he stands at punishable smoke bomb distance and lames you out. Full screen you can trade with force push with a smoke bomb, dont know if you can combo off it though, still a good way to get in though (bring ermac to you?)
6-4 to Smoke. Ermac has to spend meter to get good damage, has to be unsafe to wake up and hasnt got much of a game outside of hovering around your d4 range and lifting you if you wiff, where as smoke can trouble him with his lack of fast strings, oki game, and pure damage output.
Sektor is 6-4 Smoke too. Is even at the top level, sektor has a really good pressure game, his oki is fantastic as smokes got no armour, missile traps bait shakes and create a telepunch mixup for sektor, can punish smokebombs on block. his fast normals keep smoke honest when pressuring, but again he can get beaten by shakes, whiffing issues, and smokes pure damage output. If sektor didnt have to spend his meter on breakers due to the reset, this would be 5-5 as close to the wire as it can get.