Canon!Dumbledore didn’t sacrifice himself to save Harry (and Draco) -- he was already dying, and he just arranged his death in such a way that Snape would be in the most trusted position possible, and the Elder Wand permanently deprived of a “true master”.
He failed in the latter goal.
But he was already dying because of anti-Voldemort choices he made. I’m not sure we can expect MoR!Dumbledore to make the same choices unless he sees them as a fitting end for his life (which he may not, given that he’s not Harry’s mentor figure).
Guvf pbhyq or n genc sbe Qhzoyrqber, jvgu Uneel nf gur onvg. Vg frrzf yvxr n cbbe pubvpr sbe n genc, gubhtu- Ibyqrzbeg jvyy cebonoyl or qenvarq ol tbvat gb Nmxnona, naq Qhzoyrqber vf (va pnaba) fvzcyl fgebatre guna Ibyqrzbeg vf. Pnaba!Qhzoyrqber fnpevsvprq uvzfrys gb fnir Uneel (naq Qenpb), ohg ZbE!Qhzoyrqber frrzf gb unir frg guvatf hc gur bgure jnl nebhaq, jurer Uneel vf n urebvp pehvfr zvffvyr cbvagrq ng Ibyqrzbeg, naq fb V jbhyqa’g gehfg nal nygehvfz ba uvf cneg.
V pna’g frr jung Ibyqrzbeg tnvaf ol sbepvat gur vffhr abj, gubhtu. V vzntvar cbjreshy jvmneqf qb abg eryvadhvfu gurve oybbq rnfvyl, rfcrpvnyyl qhevat onggyr. Ur pna’g enafbz Uneel vs Uneel’f znva hfr gb Qhzoyrqber vf xvyyvat Ibyqrzbeg.
Gur zbfg frafvoyr cyna V pna pbzr hc jvgu vf Ibyqrzbeg jvyy fnpevsvpr Dhveery va sebag bs Uneel, fb n jrqtr vf qevira orgjrra Uneel naq Qhzoyrqber, naq abj ur gnxrf bire fbzr bgure uncyrff mbzovr gb thvqr Uneel shegure, naq Oryyngevk vf bhg bs Nmxnona naq va fbzr snenjnl ynaq (jurer V vzntvar gur Zvavfgel pbhyq fgvyy svaq ure).
Canon!Dumbledore didn’t sacrifice himself to save Harry (and Draco) -- he was already dying, and he just arranged his death in such a way that Snape would be in the most trusted position possible, and the Elder Wand permanently deprived of a “true master”. He failed in the latter goal.
But he was already dying because of anti-Voldemort choices he made. I’m not sure we can expect MoR!Dumbledore to make the same choices unless he sees them as a fitting end for his life (which he may not, given that he’s not Harry’s mentor figure).