Thanks for the tips!
I tested the cab not at home but at the practice space at loud (very loud) volume, I know It's not "gig level" but it was very high, I tried it with my dummer and we are a duo, so I feel confident the test is trustworthy!

IMO paired with the other cab PF210 HE the result is what I hoped for: sounds BIG but punchy
Anyways I spoke with the shop's customers care and they don't offer any "partial" refund unless I decide to send back the cab
And they even wanted me to send It back AT MY EXPENSE until I insisted that it was their error, not me "changing my mind"
Very rude and dishonest behaviour, I'm almost tempted to send it back just to have justice even of I had kept it if it was just for the cab.