Blood might be more Powerful (Thanks to the Overrated Dragon Flame) but Stella is much better at using her power and she is much more experienced as well. It may be a close call but Stella shall win in the end.
I am not sure. Bloom has a better power while Stella uses her power better I am not sure .I think I will go with Stella because bloom only uses her full power when she is angry , Stella stayed A year before the winx . So yea my pick is Stella
I think Stella would win because she is more in control of her powers. Although Bloom is the strongest because of the Dragon Fire, Stella is also strong and is better with indirect magic. Also because Bloom's Enchantix transformation was incomplete and unstable because she got an exception due to the Dragon Fire so she had a lot of disadvantages in that transformation.