You might want to use "top -Z" which gives some statistics per zone.
That's no surprise.
- "iowait" ceased to be reported by Solaris many years ago being quite confusing, meaningless and commonly misinterpreted.
- There is no "swap" CPU state so it should always display 0% here.
vmstat "free" column is definitely about physical memory. the "swap" column is not that much related to what top reports. "swap" means here available virtual memory. What top reports is the swap area usage which you can get with "swap -l" on Solaris.
Most of the statistic gathering commands (eg. vmstat, iostat, mpstat, netstat, ...) are using the kstat interface to get part or all of their input data. The kstat command allows to get the low level data from which they build a more readable representation.

No command will. "top" is gathering data from different sources (mostly kstat and /proc) and consolidating them its way.

That's a wrong assumption if you expect a single alternative tool that provides the same set of statistics. If you want top just use it and fix whatever doesn't work in the way you call it. Otherwise, you'll have to aggregate data from different commands or process kstat output, if you are not interested in process specific information.