It looks very similar to me. I also agree the liquid may have made just a little bit deeper green. I have been studying how to add Magnesium Sulfate to lawns to help the lawns be able to absorb the other fertilizers and nutrients better. Magnesium Sulfate can be purchased by buying Epsom Salt at wal mart. They say 3 lbs. of Epsom salt for every 1000sq feet of yard space will help green up the lawn too.
Great comparison. I’m using the 7-0-0 GreeneEffect iron product from yard mastery. It’s 32.99 and covers 16,000 sqft. Might be a better bang for your buck even compared to the ironpro from Menards.
If your lawn PH is above 7 the iron oxide in ironite is basically useless. If your lawn PH is below 7, you probably don't need iron except for foliar applications for the extra green up anyways.