I'd say it's 50/50 under typical conditions. But if you're backbarring a vMA resto, you definitely want RR.
rapid regen
when mutagen procs it consumes the buff, meaning if you get to low health you get a wet fart of a heal and your hot just went away.
when I cast rapids I know I have a hot on me till its duration is up, and if all goes well its heal should help keep me from getting in the situation of being at critical low hp in the first place.
I'd say it's 50/50 under typical conditions. But if you're backbarring a vMA resto, you definitely want RR.
This is somewhat incorrect.
Mutagen can procc precise regeneration every 2nd tick and has the chance to procc it 6x during it´s duration.
RR can procc it only every 3rd tick and because of this also only 4x.
I'd say it's 50/50 under typical conditions. But if you're backbarring a vMA resto, you definitely want RR.
This is somewhat incorrect.
Mutagen can procc precise regeneration every 2nd tick and has the chance to procc it 6x during it´s duration.
RR can procc it only every 3rd tick and because of this also only 4x.
Assuming it procs on cooldown. Which is obviously not a realistic expectation, since it's RNG-dependant due to the requirement for crits.
RR ticks at a higher rate, and therefore provides more opportunities to proc the set effect.
Your comparison also doesn't account for the duration disparity. Of course Muta could potentially have more procs per unit cast, simply because it lasts for longer. In reality, you'd be refreshing the buff on cooldown, so this ceases to be a factor.
You're also not considering the possibility of Mutagen beung consumed prematurely due to falling below the HP threshold.