@arma473 I disagree with that take. Maybe it's just my opinion but I'll post it anyway:
Even though the mex-count is similar, first of all badlands has 3 additional hydros. I honestly dunno if you're playing 1v1s but those hydros do indeed make quite some difference.
Besides that the main factor is the amount of spam and the earlygame. On Arcane you can protect your expansions easier earlier on (until drops etc. are a thing) by e.g. sending one tank to the right side when spawning bottom, same for your left expanding engis. While on badlands there are more possibilities to raid because you got that long pass in the back and generally your engis are spread out more since you expand somewhat equally to right/left side while you also have to defend your reclaiming engi giving more targets than on arcane.
Besides that from my experience you eco more heavily on badlands since you can defend your 3 passes easier, on arcane raids are more of a thing and you tend to build more units and especially more air to drop your opponent or just raid with t2 air, on badlands it's easier to defend. Also t2 PDs are way more effective on badlands.
so overall:
I do think badlands gives you the option to eco more and the games on it usually see heavy air and/or quite some t3 land while arcane is focused around t1/t2
