>>50310541BP teams have actual attacks too, y'know. You can boost on your sweeper, but Scolipede has Speed Boost and Swords Dance, meaning that it can most likely kill your boosted sweeper or pass to something that can.
For example, here's non-invested Scolipede OHKO'ing Garchomp after 1 SD. Garchomp cannot kill it in one hit unless it crits or sets up swords dance, in which case it dies to Scolipede.
>+2 0+ Atk Life Orb Scolipede Megahorn vs. 0 HP / 0 Def Garchomp: 386-454 (108.1 - 127.1%) -- guaranteed OHKO>252+ Atk Garchomp Earthquake vs. 0 HP / 0 Def Scolipede: 198-234 (75.8 - 89.6%) -- guaranteed 2HKO 