It isn't clear whether the OP is referring to hand flying down to a CAT1 MDA in decent weather (good practice and well worth it) or doing the same when the weather is actually at the limit
It doesn't matter - I'm not asking whether I should, and be it due to practice or systems failures which have degraded the aircraft to CAT 1 with no FD, my only question is simply this: Is it more difficult to get down to 200' in a big jet than it is in a light twin?