User blog comment:Nhan-Fiction/(Custom Champion) Maki, the Shrine Maiden/@comment-7709681-20140210224054/@comment-1330314-20140211051317

As the person who advised Nhan on both kits, I'll butt in:

The value maximum damage you can deal with is. The maximum damage you can deal with Heavenly Arrow is. Heavenly Arrow can deal 15 more damage at level 1, but has a smaller base damage at rank 5 and a smaller AD scaling. Heavenly Arrow also has less range than Piercing Arrow. Effectively, Heavenly Arrow deals less damage overall, though its main purpose is to apply Blessed Marks as well as poke.

The 100% AP ratios on ranged Maki's W and E are not as bad as you think: for Spirit Caller to deal that much damage, your target needs to be close to the explosion of all three arrows, which is a rare occurrence, and would usually happen when farming rather than when attacking champions. For Blessed Ground to deal damage, you need to land five Blessed Marks on your target, the equivalent of five autoattacks and spellcasts. , on the other hand, can deal damage in four autoattacks, and  deals more damage with her, with the possibility of dealing even more as there is no limit to how many times you can get damaged by the chompers (meaning you can take up to 900  damage from them).

The armor pen on Vengeance combined with that of LW gives a maximum of 67.5% armor penetration at rank 3, so you are right. This is, however, comparable to 's bonus armor penetration, which is 50% at all ranks and lasts 15 seconds against all targets Yasuo hits, in contrast to Maki's 7 seconds against a single target. Maki gets more penetration against squishy targets, but has no damage associated with her ultimate. In fact, her shots can be mitigated in the same way as a ult by stepping in front of them, so there are a lot of options out there to protect the squishy on your team.

P.S.: Nhan, you forgot to add the base damage on Blessed Ground. :P