...
Numeric and short answers to features are fine, but avoid anything over a word or two if possible to avoid making the product columns too wide.
Example:
| Include Page | ||||
|---|---|---|---|---|
|
Comparison
| Feature | Product1 | Product2 |
|---|---|---|
| Can psychically determine what I want it to do. |  | |
| After determining what I want it to do, actually does it. |  | |
| After doing what I want it to do, sends a tweet. | |  Home |
| Minimum number of widgets | 12 | 24 |
| Maximum number of widgets | 500 | Unlimited |
...