I don't think so. Aldo is the superior boxer, though he doesn't hit as hard. He's got better footwork, a better jab, and he can punch with both hands, whereas McGregor is mostly left-side dependent. Aldo is also incredibly diverse, and loves to pressure. I don't doubt that McGregor will try to pressure him early, but it remains to be seen how he'll react when he gets caught by a few Aldo counters.
Essentially, Aldo used to be how McGregor is now: a dynamic powerhouse who loved to knock people out. Meanwhile, McGregor used to be a lesser version of what Aldo is now: an aggressive counter striker who excels at pressuring an opponent, drawing his lead, and then punishing him. Personally, I'll take a technically brilliant veteran over a young dynamo any day of the week.
What's more, Aldo has shown that he fights harder the harder he is pushed. He was all over Mendes after being dropped in the first round, and when Mendes put him on skates with that level-change uppercut, Aldo knocked Chad down with a left hook mere moments later. Aldo's pride is his strength, whereas I think McGregor's pride may very well be his greatest weakness. Aldo refuses to be beaten, while all we've seen from McGregor is that he refuses to believe that he can be beaten.