1.
It appears very hypothetical situation...but for a given data, I can always almost say that Company A will NEVER pay less in total package than Company B for the same job role (assuming its the same as you have not provided any data for it...)
It's like saying... Faecbook will pay less than Zynga for an in demand SE. They will surely match offer of Company B if they want you.
2. Culture is extremely important not just to grow but to work every day and leave home satisfied.
3. Travel is personal choice.
Best of Luck! Nash, http://joday.com