nah beerus says to goku,u got much stronger wanna fight me?This is before ssj blue,during his training with whis.
So id say he definitely surpassed his previous level of power in base form which was ssj god.
Edit:i dont see the new ssj forms as multipliers,i see them as tiers.
Once goku achieved ssj blue he got to a new tier of power,not to beerus' tier but a higher tier than ssj god.