Mac could be better, if it can:

• Provide a package management system, e.g. homebrew
• Enhance the terminal, e.g. iTerm2
• Friendly Bash shell, e.g. Dir Colors, Bash Prompt, especially Bash Completion
• More powerful commands, the default commands are of less use
• A configured VIM editor, at lease ‘syntax on’

Well, maybe I’m a little spoiled by Ubuntu development environment :-)