Please read the following table in HTML format from a webpage and then answer the question in detail according to the table. Each table cell is defined by a <td> and a </td> tag. Each table row starts with a <tr> and ends with a </tr> tag. 'rowspan=m' and 'colspan=n' represents a cell spaning over 'm' rows and 'n' columns.

Webpage title:
2009 North West 200 Races
Table title:
Supersport
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Rank </th><th colspan=1 rowspan=1 > Rider </th><th colspan=1 rowspan=1 > Team </th><th colspan=1 rowspan=1 > Time </th><th colspan=1 rowspan=1 > Speed </th></tr>
<tr> <td colspan=1 rowspan=1 > 1 </td><td class="highlighted"  colspan=1 rowspan=1 > Northern Ireland Michael Dunlop </td><td colspan=1 rowspan=1 > Yamaha 600cc </td><td class="highlighted"  colspan=1 rowspan=1 > 4:33.664 </td><td colspan=1 rowspan=1 > 117.946 mph </td></tr>
<tr> <td colspan=1 rowspan=1 > 2 </td><td class="highlighted"  colspan=1 rowspan=1 > England Steve Plater </td><td class="highlighted"  colspan=1 rowspan=1 > Honda 600cc </td><td colspan=1 rowspan=1 > + 1.745 </td><td colspan=1 rowspan=1 > 117.199 mph </td></tr>
<tr> <td colspan=1 rowspan=1 > 3 </td><td colspan=1 rowspan=1 > Scotland Keith Amor </td><td colspan=1 rowspan=1 > Honda 600cc </td><td colspan=1 rowspan=1 > + 2.914 </td><td colspan=1 rowspan=1 > 116.703 mph </td></tr>
<tr> <td colspan=1 rowspan=1 > 4 </td><td colspan=1 rowspan=1 > New Zealand Bruce Anstey </td><td colspan=1 rowspan=1 > Suzuki 600cc </td><td colspan=1 rowspan=1 > + 4.521 </td><td colspan=1 rowspan=1 > 116.029 mph </td></tr>
<tr> <td colspan=1 rowspan=1 > 5 </td><td colspan=1 rowspan=1 > England Ian Hutchinson </td><td colspan=1 rowspan=1 > Honda 600cc </td><td colspan=1 rowspan=1 > + 4.626 </td><td colspan=1 rowspan=1 > 115.985 mph </td></tr>
<tr> <td colspan=1 rowspan=1 > 6 </td><td colspan=1 rowspan=1 > Northern Ireland William Dunlop </td><td colspan=1 rowspan=1 > Yamaha 600cc </td><td colspan=1 rowspan=1 > + 4.749 </td><td colspan=1 rowspan=1 > 115.934 mph </td></tr>
<tr> <td colspan=1 rowspan=1 > 7 </td><td colspan=1 rowspan=1 > England John McGuinness </td><td colspan=1 rowspan=1 > Honda 600cc </td><td colspan=1 rowspan=1 > + 5.115 </td><td colspan=1 rowspan=1 > 115.782 mph </td></tr>
<tr> <td colspan=1 rowspan=1 > 8 </td><td colspan=1 rowspan=1 > Republic of Ireland John Walsh </td><td colspan=1 rowspan=1 > Yamaha 600cc </td><td colspan=1 rowspan=1 > + 7.199 </td><td colspan=1 rowspan=1 > 114.923 mph </td></tr>
<tr> <td colspan=1 rowspan=1 > 9 </td><td colspan=1 rowspan=1 > England Gary Johnson </td><td colspan=1 rowspan=1 > Honda 600cc </td><td colspan=1 rowspan=1 > + 8.580 </td><td colspan=1 rowspan=1 > 114.361 mph </td></tr>
<tr> <td colspan=1 rowspan=1 > 10 </td><td colspan=1 rowspan=1 > Northern Ireland Ryan Farquhar </td><td colspan=1 rowspan=1 > Kawasaki 600cc </td><td colspan=1 rowspan=1 > + 9.180 </td><td colspan=1 rowspan=1 > 114.118 mph </td></tr>
</table>
Question:
How much faster was Northern Ireland Michael Dunlop's 4:33.664 lap than the next best lap by England Steve Plater?
Answer:
Northern Ireland Michael Dunlop's 4:33.664 lap was 1.745 faster than the next best lap, by  England Steve Plater.