In a perfect world fully optimized, total wattage will dictate final yields, not canopy size.
But In reality your final yields is dictated by your own ability to manage the chemical conversion.
Your restricting bottleneck will be the pot size, if you cannot frequent them enough then the 5 gallons will simply out cycle the 3 gallons on a day to day basis, bigger pot = bigger potential chemical interia. You would be lucky to last 8-10 hours with any sort of metabolic runway (DLI), temperature requires water, in a optimized efficient environment you would be lucky to pull 6 hours out of a 5 gallon before EC spikes and the entire electron transport chain crashes and the plant is just constantly tugging on SnRK1 and wasting vast portions of atp every cycle. Upgrade those pots to 10-15 gallons to unlock full yield potential.
Both look great best of luck.