I completely disagree.
Assuming a site lists the specs correctly, any power tool manufacturer and any high current cell manufacturer will give 3.6V as standard nominal for high drain.
That's why you see in most serious brands batteries like 14.4, 18, 36V and on any Samsung Q and later cell you see an official spec rating of 3.6.
While that, all old ICRs are definitely 3.7 only.
There are some mid-way considerations when it comes to some now-day's hybrid INRs, which state 3.65, but that's exactly what a non-high-drain INR would standardize to.
So that rating is of maximum relevance when you don't have max current as stated spec.