Laver's 1962 grand slam is obviously nowhere near as significant as his 1969 feat for obvious reasons.
Still some feat by Laver to record the best ever year by an amateur player in 1962 (he also achieved the German-Italian-French Open triple crown that year), the best ever year by a player on the pre open-era pro tour in 1967, and the best ever year by a player in the open era in 1969.
At the Australian Open in 1969 he beat Emerson, Stolle, Roche and Gimeno en-route to his title, at RG Smith, Gimeno, Okker and the defending champion Rosewall, at Wimbledon Smith, Ashe and Newcombe, and the US Open he overcome Emerson, the defending champion Ashe and Roche. So he overcome tough draws at all 4 majors that year.
Not to mention that he also won the biggest hard court tournaments at Ellis Park in Johannesburg and Boston and the biggest indoor carpet events at Philadelphia and Wembley that year as well. Since then in the open era, no player has been able to win the biggest tournaments on 4 different surfaces in one year.