Updated info in OT
To be honest, after doing TD2 extensively, I am not really convinced. Fact is that out of the ~10 purple chests I got, I only received gelatinous slimes once (the very first time at that). Could be bad luck of course, but on TD3 purple chest I got the big shard box 2 out of 3 times. I also get hero slot cards from the blue chests in TD2 quite frequently, I have 23 laying around now.
Until we figure out if mesa 3 purple has the same drop rate for 200 shards in the middle as mesa 2 purple does dropping gel champs, I can't conclude that mesa 2 is in fact any better.
I am curious, you are the big number guy.
Since this thread was originally posted alot has happened.
Shards and essence are still important, however merits are much more valuable now since that is a good way of obtaining high tier crests.
Maybe another calculation, taking crests into consderation should be done?
It's common knowledge m2 gives more skill exp points/chest, m3 gives less, m4 gives useless HB. but on the other hand m4 = 250 merits and m3 = 200 merits.
Do you have any thoughts on that Forceclosed?