A seed should always restore the same wallet, no matter if you use Daedalus, Ledger, Trezor, AdaLite, Exodus or Yoroi.
Right now this is NOT the case. Ledger and Trezor are using a different derivation path for key generation. You can’t access your funds without a working Ledger/Trezor device. This is just in emergency situations important. But it’s a bug and end user will loose trust in the system!
The competitor have this compatibility: It works perfect with every HW/SW Ethereum-wallet.
Please support my IOHK proposal, if you agree: