"I've been here many times and it's always the same, it is always a very difficult place to come to," Ferguson told BBC Sport.
"Stoke have deserved a point. They've battled hard, they always do.
"Tony's (Pulis) got a really honest team here and they do make you work, and although we've been very successful here in the past few years, I think a point was fair."
The Scot also said that Wayne Rooney's hamstring problem is not too severe after the England striker was forced to withdraw before the game.
"It's not a serious hamstring but it was enough to keep him out today," he added.
"I think maybe Wayne will be (out) for a couple of weeks."
The Red Devils next game is a Champions League group stage fixture against Swiss side Basel at Old Trafford on Tuesday.