Yeah, it's just that the 4s feel slow, but they're ability to smooth out the tractionability of the powerband that makes their laptimes confusing. To me, they feel about 10seconds a lap slower because there's no explosiveness, but they're actually boringly fast. It's almost like comparing a sports car with an automatic to a manual transmission. The manual always feel faster to me, but if you make a mistake, miss a shift or shift at the wrong RPM, you'll lose to the automatic lazyman transmission. 4-strokes allow you to make more mistakes without losing much speed (missed shift no big deal). They still suck, haha.
For a skilled rider, the 2t smokes the 4t.