Different brands have different power under the same number. I know, I did my journey with contacts, too. Your experience is real. Some brands add another -0.25D so the vision with their contacts is ‘sharper’.
So if possible stick to one brand. If not possible to buy acuvue2, find out what gives the same clarity with what’s available to you now. Don’t worry if that is a higher number. Instead, just aim for the same clarity with the now available brand of contacts and with glasses.
Also, your diopters are already in the range where the contacts and glasses are different if prescribed by optos. This is from the official opto materials
-4.75 with contacts = -5.00 with glasses
-6.50 with contacts = -7.00 with glasses
-7.25 with contacts = -8.00 with glasses
It is because the contacts sit on your eyes directly while the glasses are further away from your eye. (Official name: vertex distance. )
So it is normal to have different correction with glasses and with contacts for you.
Let me repeat: aim for a very good standard of clarity with your distance correction and start from there. (I’m afraid, 4 ghosts are just too many to call it clear vision, these may be only clear-ish flashes, sorry. Good news though: you have a wide range of accommodation. But hopefully you are not straining your eyes.)