Do you trust websites like roofstock & home union?

[Anthony Jasmine]

I've been teaching myself on how to analyze properties a lot this last week, and I'm learning a lot. I've discovered that zillow has an amazing amount of resources to check data that allows you to make educated decisions on potential ROI. I was recently looking at homeunion.com, and I noticed that their pro-forma's are very hiked up. The first thing that I noticed was their 1 year forecast of appreciation is drastically higher than all other sources. Here's an example. The excel sheet shows zillows 1-year forecast made on 4/30 based on a ton of data, and here's home union. Same location and zip code. 8.31% to -1.1%

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There seems to massive discrepancies, and I understand that they are going to make the pro-forma seem very optimistic, but it lowers my trust. I need to trust a company I'm going to invest my money into, and this unrealistic pro-forma makes me think that the rebab cost estimates are going to be much higher as well which is extremely worrisome given that I'm investing out of state. Any thoughts?