Atrophic scars- picosure or fractional co2?

Ive got minimal atrophic scarring (chicken pox and acne). I had 3 picosure tx spaced 2-3 weeks apart, during these 3 tx the derm gave many passes on a pitted scar which was my main concern. There is around 50% improvment id say 3weeks post my last tx. Now, i am looking for fractional co2 since pico is very expensive. Will have my 1st session 4 weeks post 3rd pico tx. Will i be able to see significant changes after my first co2 tx since i already had gone 3 pico focus?

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