Is it possible in AppleScript to switch to the second most recently used app (what pressing Cmd-Tab would do)? How would I got about doing this?

One way is to simulate Cmd+tab key presses, but I am not sure this would be fool proof and I wonder if there’s a better way

osascript -e 'tell application "System Events"
    key down command
    keystroke tab
    key up command
end tell'