Faster leveling N0o0o0o0o0o!

[Reinheart]

It's a mistranslation because you completely ignored the meaning of でも and the statement is very misleading in English when it needn't be.

http://kotobank.jp/word/%E3%81%A7%E3%82%82
２ 特別のもののようにみえる事柄が、他の一般の場合と同じであるという意を表す。たとえ…であっても。

#2 is the definition that applies in this context, which should be properly translated as 'even' period.

Even in 2.0.
新生でも

新生でも　- Shinsei demo - Also in 2.0
短期間で - Tankikan de - in short term
５０になれる - 50 ni nareru - become 50

You even click to check it?

Anyways who is going to think leveling will be FASTER in the first place... it's already fast enough as is so was guess everyone got it... I will update my original translation to add the EVEN/ALSO...