Congratulations on the offers!
Both companies can lead you to MBB. If you want a real, data-based answer on which one could lead to a higher chance, you can do the following:
- Look for alumni of the EYP and ADL on LinkedIn for the relevant regions
- Check how many moved to MBB
- Normalize for the size of EYP and ADL in the relevant regions
You may also want to investigate which are the likely industries where you may work. If a company specializes in exactly what you want to cover, it could make more sense to choose it, even if the chances of an MBB transition are lower.
You can find a few more tips here for a similar question:
▶ How to Compare Consulting Offers
If you want to do extra due diligence, contact Alumni of your university (not current consultants) that worked in those offices (bonus if they worked for both companies). You will learn more in a 30min call with them than with any online research you may do.