Garner insists Charlton will stick to their beliefs

Ben Garner has taken some positives from the pre-season game against Swansea, despite the Welsh side edging the game.   The Addicks played a possession based game leading some fans to shout 'Forward!  Forward!'  However, Garner insists that they will stick to their principles: https://londonnewsonline.co.uk/ben-garner-tells-supporters-his-charlton-side-will-stick-to-their-beliefs-after-positive-pre-season-display-against-swansea/

I'm a bit confused.  Is it a possession based high press?   I am told it is pressing high out of possession, but the system doesn't seem to suit Stockley.