Re: the previous page, the only reason why a player would want to spend energy on Adventure Mode when he can earn more by playing Arena since all Axies are level 1, is that it will save him time in the long run.
Explanation: The higher levels in Adventure Mode give much more SLP but can only be cleared by higher level Axies. Thus, it would save a person a lot of time if they are able to clear them.
Attached below are the SLP earning charts for Arena and Adventure.
*Do note that they are rough estimations—SLP is not guaranteed and amounts may vary slightly.