The YOGI is thought to be superior to the ascetics, and even superior to men-of-knowledge (mere scholars) ; he is also superior to men-of-action; therefore (you strive to) be a YOGI, O Arjuna.

tapasvibhyaḥ = than the ascetics; adhikaḥ = greater; yogī = the yogi; jñānibhyaḥ = than the wise; api = also; mataḥ = considered; adhikaḥ = greater; karmibhyaḥ = than the fruitive workers; ca = also; adhikaḥ = greater; yogī = the yogi; tasmāt = therefore; yogī = a transcendentalist; bhava = just become; arjuna = O Arjuna.;