The used derived entropy is roughly 128 bit. So there may be an advantage for finding seed words, but not for the derived keys. https://bitcoin.stackexchange.com/questions/48258/the-length-of-the-bitcoins-private-keys
Discussion
This is true for every single derived key, yes. However if your parent key is the source for many different key sets (as it is the case with bip-85) the strength of the parent is most important