No, I wouldn't imagine them to necessarily be the equivalent of 130/90. I mean the name indicates that they wouldn't be either, Plus 60 only means 60% more light, which is still less than the increase to 130/90.
But the big upside is that by using them your vehicle is still legal and hopefully not as big a ***** to other oncoming road users...
Of note is that Narva now do Plus 120's - < Performance Globes - Products - Narva >

