Lilimon was clearly weaker than the other Chosen Perfects
In terms of raw power, yeah she lagged a bit but speedwise she was better than all of them having been able to actually evade MetalSeadramon's attacks for a period of time.
Scenario 1) Lilimon (in her first appearance) vs Base Devimon and Base Etemon
As much we rag on Lilimon's raw power, she straight up one-shotted Gerbemon who tanked attacks from FOUR EoS Adult levels all at once. For the record, later in the same fight, Gerbemon's trash can Black Hole was sucking in MetalGreymon and the entire point of this Digimon was to be an exception to the rule of poop Digimon being weaklings.
BlackTyrannomon can also easily be explained as her not wanting to hurt him because she knows he's influenced by a virus and she wants to free him from it, which is what she ended up doing.
But yeah Lilimon should win this handily.
Scenario 2) Lilimon (EOS) vs Giant Devimon and Dark Network Etemon
Still think she wins to be perfectly honest, they are never tagging her when MetalSeadramon had difficulty doing so and as stated before, she one-shotted a Digimon who was more of a threat to MetalGreymon than either of these guys were.
Scenario 3) EOS Lilimon gets help from 01 WereGarurumon, while Giant Devimon and DN Etemon could get 01 SkullGreymon
WereGarurumon murks SkullGreymon.
Kaiser Nail pushed back Vamdemon when it actually landed (albeit he blocked it with his cloak) and he was able to damage VenomVamdemon's head with a kick before MetalGreymon knocked him on his big ass.
Skullgreymon doesn't really have a lot to go on aside from tanking attacks from early - mid series Chosen Adults and one-shotting the enemy Greymon. Even in 02 he's deemed an inferior option to Virus MetalGreymon, who is explicitly weaker than the Vaccine version.
Chosen Perfects win every round.