UKR
All Autobots and Decepticons, working together perfectly (no fighting each other, no treachery, etc), invade Apokolips with the intent of deposing Darkseid. They are lead by Optimus and Megatron.
1st scenario: 10 days of prep time for the Transformers and 10 for Darkseid and Apokolips
2nd scenario: No prep time.
1st scenario: 80s cartoon Transformers.
2nd scenario: 80s Marvel Comics Transformers
Edit: Forgot to mention, a Mother Box resizes the Transformers to make them the same size to New Gods when in the NGs' dimension as TFs are to humans when in Earth's dimension.
1st scenario: 10 days of prep time for the Transformers and 10 for Darkseid and Apokolips
2nd scenario: No prep time.
1st scenario: 80s cartoon Transformers.
2nd scenario: 80s Marvel Comics Transformers
Edit: Forgot to mention, a Mother Box resizes the Transformers to make them the same size to New Gods when in the NGs' dimension as TFs are to humans when in Earth's dimension.