Quick takeaway
Magic Chef MCM770B 0.7 Cu Ft and Whirlpool WMC50522HZ 2.2 Cu Ft are very close in this matchup. When the overall score is tied, the right choice usually comes down to price, review depth, and which spec wins matter most for your use case.
Choose Magic Chef MCM770B 0.7 Cu Ft if...
Pick Magic Chef MCM770B 0.7 Cu Ft if its current price, brand, or design fits your shortlist better than Whirlpool WMC50522HZ 2.2 Cu Ft.
Choose Whirlpool WMC50522HZ 2.2 Cu Ft if...
Pick Whirlpool WMC50522HZ 2.2 Cu Ft if capacity and model number are the reasons you are shopping in this category. It currently costs about $50.00 more, so make sure those wins matter to you.