Bontrager G5 tyre how do they size up?

Pondering putting some wider summer tyres on my ebike.
It's a trek rail and came with Bontrager SE5 team issue 2.6, which aside from being too flimsy I really liked for the summer.
(I since swapped them for Vittoria mazzas which are narrower and a.more aggressive tread, for the winter)

Anyway, the SE5 2.6 are absolutely massive. More like a 2.8 or 3.0 I guess.

So given I liked the SE5 I am thinking about maybe the G5 which is the same tread, but a stronger casing.

However the G5 come in a 2.5
Anyone know how they size up vs the SE5 2.6?
I.e. are they a true to size 2.5 or a massive 2.5

Thanks!