But this would mean that ANYTHING without external influence isn't canon. Therefore, all forms of media are not canon.
I get it. The Canon or Non-canon debate is getting old. Could we just settle on a best girl and be done with it?
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>Could we just settle on a best girl and be done with it?
we already did that 5 years ago
Uro already confirmed Homura is the "strongest" if no one knows about her powers. Obviously, the primary reason Homura is powerful is due to it, so if you know about her power, then you've gained an advantage. It's why in every fight that involves Homura, the enemy either needs to have some crazy combination of abilities to counter it (Oriko's foresight and Kirira's speed-slow), neutralize the ability before fighting (Mami in Rebellion), or be simply powerful enough for it not to matter (Walpurgis). Even Sayaka needed to escape the second time Homura tried to stick her in a time-stop (not saying that Homura is stronger than Sayaka in Rebllion prior to becoming a demon, of course).
Mami tying a ribbon was a good call on her part since it neutralized Homura's overpowered ability, but that doesn't mean she would defeat Homura if they were standing across from another and began at the same time. It would be akin to slipping Kryptonite into Superman's tights before engaging him in battle (which he did not would be taking place), beating him, and then claiming you're stronger or you would've won the fight under normal circumstances. It doesn't follow; there's no evidence.
Of course, just because Homura would probably win in a "stand twenty paces apart and begin at the whistle" fight due to her ability doesn't mean that she's stronger or more skilled than Mami.
People keep trying to use a>b>c logic in fights like it's Dragon Ball or some shit. That's incorrect. It depends on the circumstances and abilities of the opponents. For example, Kagari in the Suzune manga is described as an above-average who is still weaker than many magical girls. But if you set her up in a fight where both opponents stand some distance apart and begin the fight at the same time, then she'd be as dangerous as Homura and take out many people she couldn't simply overpower due to her ability. >>12390
Her magic was simply described as slowing down the speed of her opponent within a certain range. Nothing about it being time manipulation was said.