You are comparing the proved oil and gas reserves of two major energy companies, Exxon Mobil Corporation (ExxonMobil) and Chevron Corporation, for the fiscal year 2023.

Requirements:

1. ExxonMobil reported proved reserves of 20 billion barrels of oil equivalent (BOE) at the end of 2023. Chevron reported proved reserves of 15 billion BOE during the same period.
2. Calculate the difference in proved reserves between ExxonMobil and Chevron.
3. Analyze and discuss the implications of the difference in proved reserves on the strategic positioning and future production potential of both companies.