Please read the later post why I said 'Faster confirmation' using mycelium wallet. We're talking about transaction fee amount here and all you said is right but I'm more convinced that having large fee has the large chance to confirmed first.
Since mycelium fee is much higher than electrum, having such 130 sat/byte as lowest fee IIRC (before the recent update) than electrum having 90sat/byte as the lowest fee or even lower base on number as mentioned of tryninja since I never used that number of fee with electrum...
At the end of the day you are the one choosing how much in fees you want to pay.
It doesn't matter which wallet you are using. Both will provide you with the same confirmation time since both wallets let you send a transaction with the same fee. You can't say that X wallet is "faster" because they charge higher fees. That's just dumb.