Probability 5* subfeatured champions

Nikual

I do not have any representative data but it seems that the probability of pulling a subfeatured 5* hero from a featured 5* crystal is much lower than pulling a 5* basic hero. Any comments on that?

LocoMotives

That's correct, and Kabam said the sub-feature would be the lowest chance of all. But, sub-features do seem to be more prevalent than we initially estimated. A lot have pulled subs from the feature crystals.

Of course, this could be confirmation bias as we tend to notice those more than we do the basics.