| Microsoft (221) | OSS (149) | Total | ||
| Reputation | 40 | 70 | 110 | |
| Bad or Good | 3 | 15 | 18 | |
| History of Contributions | 22 | 29 | 51 | |
| Code Quality | 6 | 45 | 51 | |
| Respect | 1 | 1 | 2 | |
| Expertise | 132 | 48 | 180 | |
| Experience of Contributor | 68 | 12 | 80 | |
| Experience of Reviewer | 40 | 18 | 58 | |
| Expertise | 39 | 23 | 62 | |
| Relationship | 52 | 78 | 130 | |
| Quid pro quo | 1 | 5 | 6 | |
| Relationship | 26 | 18 | 44 | |
| Trust | 20 | 24 | 44 | |
| Teammate / coworker | 7 | 39 | 46 | |
| Time/Effort of Review | 85 | 47 | 132 | |
| Time/Effort of Review | 85 | 47 | 132 | |
| Other | 12 | 13 | 25 | |
| Encourage contributions | 0 | 13 | 13 | |
| Interesting code | 12 | 8 | 20 | |