The bets are determined by checking a wide variety of projections against my own knowledge of how players will be utilized given game context. The player prop lines were taken from this site.
When analyzing projections from fantasy sites, you'll often find that the projections are higher than betting lines, which will make you bet shit tons of overs. This is a common mistake. The projections are mean based, which tend to skew higher because the range of outcomes are not evenly distributed. (i.e., a running back on a good day could go for over 100 yards, but he would never go under 0... hopefully). If you find a mean projection lower than the Vegas line, the under is likely a good bet. To bet an over, the mean projection should be significantly higher. All bets below will follow that logic.
Jalen Hurts o235.5 passing yards -120 (PointBet): Given the high game total (50.5), the model's belief that the Eagles should be slight dogs, the Chiefs issues with defending the pass (they're 20th in pass defense DVOA), and the projections, I'm taking the over here.
Miles Sanders u61.5 rushing yards -104 (Caesars): As mentioned above, I expect the Eagles will need to throw often. I think the line here is missing the recent play of Kenneth Gainwell, who has consistently cut into Sanders's workload. The projections I'm seeing are consistently lower then this number.
Skky Moore o7.5 receiving yards -110 (BetMGM): Moore received an expanded role in the conference championship due to a slew of Chiefs injuries, including JuJu Smith-Schuster, Mecole Hardman, and Justin Watson. With only Hardman expected out, Moore likely slides back to WR5 on the depth chart. The last time that exact group of receivers played together was week 17, where Moore ran a route on 11/46 dropbacks (23.9%). Given the high total and Moore's tendency to run routes out of the slot (where you avoid Darius Slay/James Bradberry), I like the over here.