User blog comment:Leyrann/Hard counters./@comment-89.177.72.8-20120728003240/@comment-4834593-20120728052256

If you would compare a level 3 Ground Slam (40% reduction) with a level 3 Burst of Speed (90% bonus), then you would have 114% left. Both at level 5, its 120% bonus, and 50% reduction, and you'd still have 110% left. So they are around equal.

I do, however, not know if this is also right in combination with the attack speed per level. This is added to your attack speed in the same way normal bonus attack speed is, and I think that it means the numbers are lower on higher levels, because this will also be reduced, while it won't give an increase.

I must say that Burst of Speed is weaker against Ground Slam than I thought...