A matching file size per minute strongly suggests the 60D and 7D use essentially the same bitrate for the same resolution, frame rate, and codec. In practice, that means their recorded 1080p video should be very similar, and any differences are likely negligible.

The same bitrate does not guarantee bit-for-bit identical video, because encoder behavior can vary. Two cameras could make slightly different compression decisions while still producing the same average data rate. But given how closely related these models are, the community consensus is that you should expect effectively the same video output for real-world use.

As for the 7D’s dual DIGIC 4 processors: they likely do not provide a major video-quality advantage here. The extra processing power is more likely used for features such as full-resolution continuous still shooting and other camera operations rather than meaningfully better video recording.

So if you’re choosing between them, it makes more sense to compare non-video features. For video use, the 60D’s articulated screen may actually be a bigger practical advantage than the 7D’s extra processor.