celebrate after a fine strike from alexis sanchez put them 3-0 up against liverpool on saturday .
is the most impressive team the gunners have boasted since the dying embers of the invincibles side of more than a decade ago .
they have pace , power , energy and invention in attack that and that is just alexis sanchez .
at the other end they have hit upon a team which , given the manner in which they 're finishing this campaign , could well be installed that