I'm not making excuses for IE (the browser) compared to Firefox or Chrome, but there is a security difference in the way they work. Firefox and Chrome are more open and not as secure, thus more venerable to phising, virus drive-bys, etc.. The browser you use can make a big difference in the way a web-site acts.
Without going off at length (too badly) nor trying to prolong this tangent, I'll merely say as an IT professional of almost 20 years, I can tell you that your browser assertions are unequivocally false.
Internet Explorer consistently scores near the middle or bottom of the pack in every category. Security (both live and in the amount of time it takes to patch known vulnerabilities), stability, standards compliance (poor rendering, makes coding for the web harder on everyone, TRUST ME), JavaScript runtime performance, etc.
It's so bad Microsoft is replacing it with a new browser called Edge.
Chrome and Firefox are NOT less secure than IE, but you were right about one thing (possibly two): They do things differently (better?) which results in faster fixes to known vulnerabilities, better compartmentalization (which makes them BETTER against phishing, not worse) and if by "openness" you mean open-source and by implication less secure... just
grossly incorrect. Peer review beats "I have a secret" in terms of security 10 times out of 10. Dozens of studies affirm that fact.