Talk:Vi/@comment-24.186.157.241-20121221173037/@comment-68.109.110.108-20121223050835

Also, I feel compelled to mention, FM + IBG wouldn't be 61% even if it did work.

The reason isn't obvious, but slow stacking doesn't work well because slows diminish: http://leagueoflegends.wikia.com/wiki/Slow#Decreasing_Movement_Speed

"If a champion is affected by multiple slows, the strongest one will be fully applied, while the others are applied sequentially with 65% reduced effectiveness down to 35% of its original strength."

This means their speed would be .6 * (1 - (.35 * .65)), or 46%, which amounts to a 54% slow. Which again, doesn't happen, because items.