↑can be mitigated by not pressing anything - causes 3rd and 5th hit to whiff (for a total of 51 dmg) and allowing for a BT.3_4 punish
↑4,4,4 in the back gives a 50/50 between 4,4,4,4,4 and 4,4,4,F~4 (or ~df+2,3). This doesn't work directly at the wall since the first 4 turns them around. Useful near the wall since every option splats or bounces. 4,4,4,4,4 always bounces, but HAR.4 doesn't bounce if they're BT. If you get a reverse splat, then f,F+3 OTG.d+3+4 is good damage.
↑f,F+3 (and HAR.uf+3) only spikes face-up opponents. Face-down opponents can tech roll to avoid any guaranteed hits.
↑4 is hard to punish because of its extensions, and many chars can't block punish it at tip range.