One rule let the lowest lvl card win in the lost warehouse. Whether you play evo or han this rule applies since you share the exp it is more beneficial this way. For example a lvl 1 against a lvl 4 is the one wins you get 207 exp a piece whereas is the 4 win both players get 80 exp. They were calculated using Vansaar in case there are not exaclty right. Not matter what strategy you use just remember this one simple rule and both people will come
out with the best results. Also for those playing in lost warehouses with fully evolved lvl 5 decks please stop using the warehouse for stat padding
*cough* already there
And what you suggest to do as EVO is, de facto, not EVO. Therefore the rule cannot apply.
(And no, I did not have the motivation to modify the linked "guide" so far. Somehow, lots of fake EVO-ers and people playing to win massively demotivated me in respect to the warehouse. Meh.)