As you say John, things are probably more noticeable in the actual prints, when laid side by side, but looking at the scans, I definitely prefer the MG5 print.
You've done well to try and get both of the prints to look as close as possible the same, exposure wise, but I think the print on MG5 has had just a tad more exposure. I'm basing this on the very tiny bit of pavement on the print bottom left, but either way, the MG5 print does have a little bit more contrast, which I like, with any black areas looking a deeper black as well. For that is something I was rarely happy with when using MG4, getting solid blacks to look, well, solid black, without over doing all of the other tones.
I've only just started to use my new box of MG5, with no MG4 left to compare directly to, but I do have copies of prints and printing notes for prints made for Print Exchanges on here, so I might too, try to do a comparison.
Everything I've read about the new MG5 has been positive, so well done Ilford!
Terry S