No way Mulroney wins, he was horribly unpopular with Canadians by 1993 and would be weighed down by his record even more than Campbell was. The only reason the PCs looked like they stood a chance was because Mulroney left. I'd think the result would be similar, if not even worse. Harper actually could have formed a minority government(though it wouldn't have lasted long) and only at the end when the NDP collapsed and Liberals surged was Harper truly doomed. Even then he got a much better result than the PCs in 1993 did or ever could have gotten.
Come to think of it, you're right.