I agree, Bush would not have won WI. The only states that would have flipped without Perot I believe are NH, OH, MT, NV. Perot pulled slightly more votes from Bush but not much. Clinton still would have won the election and probably would have won a majority of the PV as well (same goes for 1996).
Wrong:
NJ, KY, CO, GA also would have flipped to Bush.
What people are forgetting is that the 1992 election was quite good for the GOP outside the Presidential race. It was the first presidential election where the winner lost seats in the House (GOP+9), since 1960, the GOP held even in the Senate and picked up state legislative races. Proof Perot took more form Bush than from Clinton.