Use 'as many as' when comparing to show two things are equal in number.

Equal Comparison

Stress abundance or sufficiency when expressing there are enough resources or quantities.

Positive Emphasis

Convey what you or someone else wishes or prefers in terms of quantity.

Highlight an unexpectedly high number or amount, which could be surprising.

The amount specified might not be the maximum, but it's still emphasized as large.

Indicate an approximate amount when the exact number isn't known.

Point out that there is no limit to how much one can choose or accept.

Shows that there is no pressure to take a lot, just up to one's limit or desire.

When providing a service or product, show that there's an abundance available.