Exhibit 99.28 MBNA MASTER CREDIT CARD TRUST II SERIES 1998-G KEY PERFORMANCE FACTORS April 30, 2001 Expected B Maturity 9/15/06 Blended Coupon 5.2283% Excess Protection Level 3 Month Average 7.72% April, 2001 7.56% March, 2001 8.13% February, 2001 7.47% Cash Yield19.61% Investor Charge Offs 4.98% Base Rate 7.08% Over 30 Day Delinquency 4.89% Seller's Interest 9.33% Total Payment Rate13.70% Total Principal Balance$58,171,313,434.78 Investor Participation Amount$750,000,000.00 Seller Participation Amount$5,425,622,873.29