The upper deck is too high to evacute safely
Not that old chesnut! Or does the 747 not have an upper deck accommodating passengers? Yes, I know the 380's is bigger, but fail to see what difference a couple of feet in height (if that) will make.
"it's a revamped version of a 35 year old design".
You can apply this argument equally to the 380. It is a revamped design, they just made it bigger!
Boeing's campaign to depict the A380 as an overweight, inefficient pig
Whilst heavier per passenger compared to other aircraft, I'd hardly say "overweight." And when it comes to weight, Boeing have got a lot to do with the 7e7.
When it comes to A380 & 7e7, they can both be considered new designs, but ultimately both are flawed albeit not enough to lead to failure.