Lesser Vigor caps at 15 hitpoints healed (over 90 seconds). Cure Light Wounds at the same caster level heals 6 - 13 (average 9.5), maximized 13, empowered 9 - 19 (average 14), maximized and empowered would average 19...
Now while a lesser vigor effectively heals slightly more on average than an empowered cure light, the penalty is fairly high: its only of real use in downtime situations, where its not really that big a deal.
Now while a lesser vigor effectively heals slightly more on average than an empowered cure light, the penalty is fairly high: its only of real use in downtime situations, where its not really that big a deal.