Really? Apples with apples here guys...
The AIM-7, Maverick, HARM, SLAM-ER, and Mk-82/83 slicks don't need to be integrated with F-35.
Shall we substitute these with AIM-120C/D, SDB II/Brimstone, AARGM (Block 4), JSM (Block 4A) and all the JDAM versions, and I'd argue the F-35 stacks up very well. Also, lets compare the F-35A's 18,500lb internal/external load with the Hornet's 12,500lb capacity.
Oh, and where is the F/A-18s's internal weapons bay? And do we want to compare internal fuel capacities?