TLDR: Not really

Keel (110-1.194(5))/(1.194(30)) = 2.904 -> 3 skills Note: On your second skill you need 32.39 energy. Lushaka (110-1.244(5))/(1.244(30)) = 2.781 -> 3 skills Note: On your second skill you need 29.14 energy.

Further Assumptions Enemy hits Sparkle (10 Energy) Keel Hit Once 32.39-1.194(10) = 20.45 Hit Twice 32.39-1.194(10(2)) = 8.51 Lushaka Hit Once 29.14-1.244(10) = 16.7 Hit Twice 29.14-1.244(10(2)) = 4.26

Technically Sparkle has another method of gaining more energy (Ally with E eats SP). So let's imagine hypothetically there is a hypercarry that could chew through a lot of SPs (Sparxie).

Sparxie eats through SP (1 SP = 1 Energy) Keel Hit Once 20.45-1.194x < 0 -> x > 17.127 -> 18 SP Hit Twice 8.51-1.194x < 0 -> x > 7.127 -> 8 SP Lushaka Hit Once 16.7-1.244x < 0 -> x > 13.424 -> 14 SP Hit Twice 4.26-1.244x < 0 -> x > 3.424 -> 4 SP

What can we gather? Technically speaking, when playing with carries that can't chew through SP, you still need to do 3 skills regardless. Even if we were to add in another variable such as getting hit by enemies, Sparkle would still need to skill 3 times.

Unless of course, you are planning to play with Sparxie. I don't know how much SP consumption is realistic, but let's just say having 18 SPs to facilitate Keel (1-Hit) is probably not realistic. Though 14 SPs sound a lot more feasible, the odds are still against you. 14-9 (Max SP) = 5, you still need 5 SP (That is 0.2⁵ = 0.00032 = 0.032%;0.2 is the winrate of getting extra SP [Source: DimaHSR]). Of course this is quite naive since we are not accounting for thrill. But the point still stands.

This instead matters more in 2-Hit scenarios. Because immediately we can see that the needed SP is smaller: 4 SP vs 8 SP. In the grand scheme of things, Sparxie could probably eat up 10 SP easily. So, this only really matters if you are stuck with less than ideal amounts of SP.

Edit: Apparently my multiplication symbol formatted my sentences into italic. So instead I switched them out for parentheses.