You can argue him to be more durable than Pre-Training Denji,
which he already is iirc but you are unlikely to get anything more than a "possibly" for his strength, considering that it is not directly shown.
This one is a lot weaker. What says Denji that can't be significantly faster? In both
Part 1 and
Part 2 we see how incredibly fast he can move.
That feat is actually pretty crazy now that I am looking at how big the slice is compared to Transformed Chainsaw Man's height. If someone calced it I could see the high end reaching tens of meters, but without a calc it's still very easily several meters flat.
I would just be specific that this applies to his katana slashes and not his literal arm and blade length.
According to VSBW's
page names rules, page titles are meant to prioritize clarity and avoid ambiguity so
character pages should generally be titled by the character's actual name rather than being moved purely because an alias is more recognizable. The rules also state that character page titles should be the respective character's name and nothing else unless extra clarification is needed.
On top of that, the
Standard Format for Character Profiles already has the name section for the character's true name and common names. So "Katana Man" can simply be listed there as an alias without renaming the entire profile.