I do not believe anyone can compare the physical suffering they endure to the suffering Christ endured. Could some suffering physically exceed that of the physical suffering of Christ? Hard to imagine but I suppose it's possible. I don't see anything in the scriptures that emphatically states His suffering must exceed anything we could be subjected to. But we know Christ's suffering went way beyond the physical aspect. In fact, I don't think His physical suffering can be separated from the emotional or spiritual suffering He endured. It's a package deal. Therefore, His suffering can never compare to anything we can imagine. Think of it: the Son in eternal fellowship with the Father suddenly being forsaken as all our sins are laid upon Him. Will we ever endure such a thing? (I ask rhetorically)
Jesus even asked James and John, "Are you able to drink the cup I am about drink?" Implied answer being no.