There are a lot of things a competent dread pilot could do in that scenario. Warping away would likely not be required and in all probability it just blaps the loki, as the OP’s claims are fairly questionable (and questionable is basically a misspelling of “horseshit” in this case).
If you need some data to put this into perspective, here are all of the solo kills of dreadnoughts by lokis that zkill is aware of.
https://zkillboard.com/ship/29990/reset/group/485/losses/solo/
Some things you might notice:
-We hit all the way back to 2012 on page 1
-There is no page 2
-Most of the dread hulls are unfit and in wormholes, likely shat out by a dead upwell.
Here’s all of the solo kills of lokis by dreadnoughts.
https://zkillboard.com/group/485/reset/ship/29990/losses/solo/
Basically, the OP is living in a world of make-believe.
Dreads blap t3cs on the reg, while solo kills of (fit and piloted) dreads by lokis are virtually unheard of.