Legendary Max Battles are BS!

As the title says, it's BS! All Legendary max battles should be 10~20 people just like a normal legendary raid or 6~8 people but with 6 DMax/GMax mons! How tf can we suppose to beat a fcking Legendary with just 4 people and with just 3 mons?! Not even stating that even if you could defeat it, you can't guarantee to catch it and the IV floors are BS!