There are a few other variables in play, but broadly speaking you’ll find a dipole more efficient than an EFHW, if only because the dipole doesn’t require a transformer that may be subject to higher losses. Adding traps instead of links may change that, as the traps will add some loss.
There was an excellent comparison of seven antennas antennas on four bands done last year by HB9SOTA.
You can find the report here: https://hb9sota.ch/wp-content/uploads/2017/07/wspr_gurten_hb9sota_20170702_en.pdf
And the reflector discussion here: Seven SOTA antennas compared using WSPR on a summit