I would like to note that pursuing GC 40 and a synergetic Earth Ninjutsu 40 attack is far stronger, cheaper and better for long-term pyramid breadth and available capstone-tier skills, than pursuing a Taij based offense, with or without Lightning Element for SoTS.
Benchmark 1 : Taijutsu 49 + SoTS (1405 XP)
Taijutsu 49 + Strength of the Storm 30 + RRBs
We will consider the best case scenario - that Hazou both applies Roki (Deceit 24 so that's unlikely against a Jounin) and the maximum 4 SoTS tags to the roll, inflicting 1 Stress to himself in the process.
Benchmark 2 : Earth Ninjutsu (518.5 XP)
Earth Dragon Bullet 40 + GC 40 + Elemental Journeyman Stunt
EDB is exact same as WDB, being a hacked variant to give us a benchmark on what we could expect from a good attack jutsu. At Level 40 it makes up to five attack rolls until it hits. This means it can be used against up to two targets with a guarantee that neither will get their Substitution bonus even if they both burn their supplementals. Jounin are likely to have Substitution 40 for a +20 so negating that is a huge deal. Against a single target, the attack effectively hits for the best of ~4 rolls on Fudge Dice, further improving it by an average of exactly 5 points.
Numbers
1. Taijutsu : 49 + 11 (RRB) + 20 (SoTS, 4 Tags at AB 5) + 5 (Roki) + 6 (Boost) = 86 if Roki fails or 91 if it Succeeds
2. EDB (Single Target Effectiveness) : 50 (40 + Earthshaping/4, capped at 50) + 5 (AB) + 10 (GC 2 AB) + 6 (Boost) + 20 (Multi-Attack bypasses Sub 40) + 5 (Dice Shift from best of 4 Rolls) = 96 or 111 with Elemental Advantage
Conclusions
- Even with Roki and 4 SoTS tags applied to the roll (1 Stress to self), the Taijutsu benchmark still hits at 5 points lower than a single target EDB 40 - or 30 lower in the extreme case in the other direction (Elemental Advantage, 3 SoTS tags, no Roki). Ninjutsu crushes, number wise.
- Despite performing far worse in rolls, the Taijutsu build costs a sky-high 2.71 times as much XP as the Earth Ninjutsu benchmark.
- Versatility-wise Earth Ninjutsu in EDB 40 GC 40 would offer a lot of options while Taijutsu would actively shrink them by forcing Hazou to close into melee and make himself vulnerable to even attack. Not only that, to roll higher than the benchmark, Hazou would long-term need to level Taijutsu into one of his high slots of the pyramid while the Ninjutsu build does not have such restrictions due to the Elemental Stunts.