Answer
Company A is better on commission, but other considerations are possible (employment benefits, vacation time, bonuses, etc).
Work Step by Step
If one is purely considering commission, then clearly Company A is better because it pays a higher commission rate (10% vs 8%). However, there may be other considerations that could sway one to Company B. For example:
- Health insurance and other benefits (maternity leave, disability benefits, etc).
- Vacation time/sick days
- Ability to rise up in the company and possibility of salary increases in the future
- Location of company relative to your home
Many other considerations are possible.