> FH success mostly helps BFR in regards to operating a ton of engines simultaneously (27 for Heavy, 31 for BFR) However, the FH uses RP-1-O2 Merlin engines, w

> FH success mostly helps BFR in regards to operating a ton of engines simultaneously (27 for Heavy, 31 for BFR) However, the FH uses RP-1-O2 Merlin engines, whereas the BFR will use Methane-O2 Raptor engines, so they might not learn too much. Edit: RP-1 fuel.