In combat, the Su-27 has consistently bested the MiG-29, going 5:0 against the type during the Eritrean-Ethiopian war. With roughly equal unit costs and similar capabilities, it’s a fairly simple decision to go with the aircraft that was designed from the outset to be better than the other and has proven it in combat.
While the MiG-35 has won one large order with Egypt and a smaller one with Iraq, these numbers are dwarfed by the number of Sukhoi sales that have occurred within the same time period. This trend seems likely to continue into the future.
Charlie Gao studied political and computer science at Grinnell College and is a frequent commentator on defense and national-security issues.
Image: By Oleg V. Belyakov - AirTeamImages [CC BY-SA 3.0 GFDL 1.2, CC BY-SA 3.0 ( https://creativecommons.org/licenses/by-sa/3.0) or GFDL 1.2 ( http://www.gnu.org/licenses/old-licenses/fdl-1.2.html)], via Wikimedia Commons